Kuhli Loach Tank Mates

Kuhli Loach is peaceful, so its tank mates need choosing with care. Here are the 162 freshwater species that pair well with a kuhli loach — plus the 54 to avoid — with a live checker you can tune to your own tank.

By The Aquarium DB Team • Updated June 7, 2026 • Full Kuhli Loach care guide →
Best matches

The best tank mates for a kuhli loach

  • Ember Tetra ✅ Compatible
    Easy care · Peaceful · 2 cm · 24–28 °C (75–82 °F)
    Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Neon Green Rasbora ✅ Compatible
    Easy care · Peaceful · 2 cm · 22–26 °C (72–79 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Ramshorn Snail ✅ Compatible
    Easy care · Peaceful · 2 cm · 20–28 °C (68–82 °F)
    Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Red Lip Nerite Snail ✅ Compatible
    Easy care · Peaceful · 2 cm · 22–28 °C (72–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Dawn Tetra ✅ Compatible
    Easy care · Peaceful · 2.5 cm · 22–28 °C (72–82 °F)
    Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Nerite Snail ✅ Compatible
    Easy care · Peaceful · 2.5 cm · 22–28 °C (72–82 °F)
    Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Assassin Snail ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–26 °C (72–79 °F)
    Both are peaceful, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
  • Glowlight Danio ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–26 °C (72–79 °F)
    Both are peaceful, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
  • Gold Ring Danio ✅ Compatible
    Easy care · Peaceful · 3 cm · 18–26 °C (64–79 °F)
    Compatible on the things that matter: shared water near 24–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Malaysian Trumpet Snail ✅ Compatible
    Easy care · Peaceful · 3 cm · 21–27 °C (70–81 °F)
    Both are peaceful, and their water overlaps around 24–27 °C — no size, zone or temperament conflicts.
  • Neon Tetra ✅ Compatible
    Easy care · Peaceful · 3 cm · 20–26 °C (68–79 °F)
    Both are peaceful, and their water overlaps around 24–26 °C — no size, zone or temperament conflicts.
  • Tail-spot Corydoras ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–28 °C (72–82 °F)
    Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Trinidad Guppy ✅ Compatible
    Easy care · Peaceful · 3 cm · 19–24 °C (66–75 °F)
    Compatible on the things that matter: shared water near 24–24 °C, workable temperaments, and no predator-and-prey size gap.
  • Pygmy Corydoras ✅ Compatible
    Easy care · Peaceful · 3.2 cm · 22–26 °C (72–79 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Glowlight Rasbora ✅ Compatible
    Easy care · Peaceful · 3.5 cm · 23–28 °C (73–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Blue Danio ✅ Compatible
    Easy care · Peaceful · 4 cm · 21–26 °C (70–79 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Emperor Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 23–27 °C (73–81 °F)
    Compatible on the things that matter: shared water near 24–27 °C, workable temperaments, and no predator-and-prey size gap.
  • Flame Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Glowlight Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Golden Dwarf Barb ✅ Compatible
    Easy care · Peaceful · 4 cm · 18–24 °C (64–75 °F)
    Compatible on the things that matter: shared water near 24–24 °C, workable temperaments, and no predator-and-prey size gap.
  • Phoenix Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 23–28 °C (73–82 °F)
    Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Red Phantom Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Rosy Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Serpae Tetra ✅ Compatible
    Easy care · Semi-aggressive · 4 cm · 23–28 °C (73–82 °F)
    Peaceful + Semi-aggressive, but with no direct clash here, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
With caution

Kuhli Loach tank mates that can work with care

  • Afra Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 10 cm · 24–28 °C (75–82 °F)
    Different pH ranges (5.5–7 vs 7.8–8.6); doable if you sit in the shared band, but not ideal long-term.
  • African Butterfly Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 8 cm · 22–28 °C (72–82 °F)
    Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Altifrons Geophagus ⚠️ With caution
    Medium care · Semi-aggressive · 25 cm · 24–28 °C (75–82 °F)
    Watch for Altifrons Geophagus picking off any kuhli loach small enough to fit in its mouth.
  • Amano Shrimp ⚠️ With caution
    Easy care · Peaceful · 5 cm · 18–28 °C (64–82 °F)
    Kuhli Loach may eat Amano Shrimp or pick off its shrimplets — a densely planted tank with moss gives them a fighting chance.
  • Amazon Puffer ⚠️ With caution
    Medium care · Peaceful · 8 cm · 23–28 °C (73–82 °F)
    Your 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
  • Angelfish ⚠️ With caution
    Medium care · Semi-aggressive · 15 cm · 24–30 °C (75–86 °F)
    Your 75 L tank is below the ~110 L this pairing really wants — crowding raises aggression.
  • Angelicus Synodontis ⚠️ With caution
    Medium care · Semi-aggressive · 25 cm · 23–27 °C (73–81 °F)
    Kuhli Loach is small enough to tempt Angelicus Synodontis; only risk it in a densely planted setup with hiding spots.
  • Arrowhead Puffer ⚠️ With caution
    Hard care · Aggressive · 12 cm · 23–28 °C (73–82 °F)
    Your 75 L tank is below the ~132 L this pairing really wants — crowding raises aggression.

+ 116 more “with caution” pairings — see the interactive checker above.

Avoid

Fish to avoid keeping with a kuhli loach

  • Wels Catfish ⛔ Avoid
    Hard care · Aggressive · 300 cm · 15–25 °C (59–77 °F)
    Kuhli Loach is bite-sized to a 300 cm predatory wels catfish — it will be eaten.
  • Alligator Gar ⛔ Avoid
    Hard care · Aggressive · 250 cm · 24–28 °C (75–82 °F)
    Size gap is too large (250 vs 10 cm): Alligator Gar will treat Kuhli Loach as food.
  • Redtail Catfish ⛔ Avoid
    Hard care · Aggressive · 120 cm · 24–27 °C (75–81 °F)
    Kuhli Loach is bite-sized to a 120 cm predatory redtail catfish — it will be eaten.
  • Fire Eel ⛔ Avoid
    Medium care · Semi-aggressive · 100 cm · 24–28 °C (75–82 °F)
    Kuhli Loach is bite-sized to a 100 cm predatory fire eel — it will be eaten.
  • Clown Knifefish ⛔ Avoid
    Hard care · Aggressive · 90 cm · 24–28 °C (75–82 °F)
    Kuhli Loach is bite-sized to a 90 cm predatory clown knifefish — it will be eaten.
  • Koi ⛔ Avoid
    Medium care · Peaceful · 90 cm · 4–28 °C (39–82 °F)
    Size gap is too large (90 vs 10 cm): Koi will treat Kuhli Loach as food.
  • Spotted Gar ⛔ Avoid
    Hard care · Aggressive · 90 cm · 18–26 °C (64–79 °F)
    Kuhli Loach is bite-sized to a 90 cm predatory spotted gar — it will be eaten.
  • Wolf Cichlid ⛔ Avoid
    Hard care · Aggressive · 72 cm · 24–30 °C (75–86 °F)
    Kuhli Loach is bite-sized to a 72 cm predatory wolf cichlid — it will be eaten.

+ 46 more to avoid — the checker above flags every one.

Interactive tool

Check any fish against a kuhli loach

Dial in your exact tank size and filter by result — the checker scores every species in our database against a kuhli loach, with the reasoning for each verdict.

Tank-mate checker

Will it live with a Kuhli Loach?

We compare each fish against your kuhli loach on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.

  • Agassiz's Dwarf Cichlid✅ Compatible
    Semi-aggressive · 9 cm · Medium care · 24–30 °C (75–86 °F)
    • Compatible on the things that matter: shared water near 24–30 °C, workable temperaments, and no predator-and-prey size gap.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Badis✅ Compatible
    Semi-aggressive · 8 cm · Medium care · 22–28 °C (72–82 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Banded Dwarf Cichlid✅ Compatible
    Semi-aggressive · 7 cm · Medium care · 24–30 °C (75–86 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Banded Gourami✅ Compatible
    Semi-aggressive · 12 cm · Easy care · 22–28 °C (72–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Black Kuhli Loach✅ Compatible
    Peaceful · 8 cm · Easy care · 23–28 °C (73–82 °F)
    • Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Bolivian Ram✅ Compatible
    Peaceful · 8 cm · Medium care · 24–28 °C (75–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Brilliant Rasbora✅ Compatible
    Peaceful · 9 cm · Easy care · 22–28 °C (72–82 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Keep Brilliant Rasbora in a shoal of 6+ or it gets stressed and nippy.
  • Burmese Loach✅ Compatible
    Peaceful · 9 cm · Easy care · 22–28 °C (72–82 °F)
    • Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Cockatoo Dwarf Cichlid✅ Compatible
    Semi-aggressive · 8 cm · Medium care · 24–28 °C (75–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Dwarf Gourami✅ Compatible
    Semi-aggressive · 8 cm · Medium care · 24–28 °C (75–82 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Giant Betta✅ Compatible
    Peaceful · 12 cm · Medium care · 24–28 °C (75–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Giant Kuhli Loach✅ Compatible
    Peaceful · 12 cm · Easy care · 24–30 °C (75–86 °F)
    • Compatible on the things that matter: shared water near 24–30 °C, workable temperaments, and no predator-and-prey size gap.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Gold Barb✅ Compatible
    Peaceful · 7.5 cm · Easy care · 18–26 °C (64–79 °F)
    • Compatible on the things that matter: shared water near 24–26 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Gold Barb in a shoal of 6+ or it gets stressed and nippy.
  • Golden Wonder Killifish✅ Compatible
    Semi-aggressive · 10 cm · Easy care · 22–28 °C (72–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Goldeneye Dwarf Cichlid✅ Compatible
    Semi-aggressive · 8 cm · Easy care · 24–28 °C (75–82 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Kribensis✅ Compatible
    Semi-aggressive · 10 cm · Easy care · 24–27 °C (75–81 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Leopard Frog Pleco✅ Compatible
    Peaceful · 9 cm · Medium care · 25–30 °C (77–86 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Murray River Rainbowfish✅ Compatible
    Peaceful · 11 cm · Easy care · 15–26 °C (59–79 °F)
    • Compatible on the things that matter: shared water near 24–26 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Murray River Rainbowfish in a shoal of 6+ or it gets stressed and nippy.
  • Rosy Barb✅ Compatible
    Semi-aggressive · 10 cm · Easy care · 18–26 °C (64–79 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Keep Rosy Barb in a shoal of 6+ or it gets stressed and nippy.
  • Splashing Tetra✅ Compatible
    Peaceful · 8 cm · Medium care · 22–28 °C (72–82 °F)
    • Compatible on the things that matter: shared water near 24–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Splashing Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Spotted Rubbernose Pleco✅ Compatible
    Peaceful · 12 cm · Medium care · 20–26 °C (68–79 °F)
    • Compatible on the things that matter: shared water near 24–26 °C, workable temperaments, and no predator-and-prey size gap.
    • Both favour the bottom of the tank — offer enough cover so they aren't always in each other's space.
  • Thick-lipped Gourami✅ Compatible
    Peaceful · 9 cm · Easy care · 22–28 °C (72–82 °F)
    • Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Tiger Betta✅ Compatible
    Semi-aggressive · 11 cm · Hard care · 22–27 °C (72–81 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Topaz Cichlid✅ Compatible
    Semi-aggressive · 10 cm · Medium care · 23–28 °C (73–82 °F)
    • Peaceful + Semi-aggressive, but with no direct clash here; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Afra Cichlid⚠️ With caution
    Semi-aggressive · 10 cm · Medium care · 24–28 °C (75–82 °F)
    • Different pH ranges (5.5–7 vs 7.8–8.6); doable if you sit in the shared band, but not ideal long-term.
    • Water hardness preferences differ (Kuhli Loach 1–8 vs Afra Cichlid 10–20 dGH).
    • Your 75 L tank is below the ~150 L this pairing really wants — crowding raises aggression.
    • Keep Afra Cichlid in a shoal of 6+ or it gets stressed and nippy.
  • Bearded Corydoras⚠️ With caution
    Peaceful · 10 cm · Medium care · 18–24 °C (64–75 °F)
    • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
    • Keep Bearded Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Clown Rasbora⚠️ With caution
    Peaceful · 10 cm · Medium care · 23–28 °C (73–82 °F)
    • Your 75 L tank is below the ~110 L this pairing really wants — crowding raises aggression.
    • Keep Clown Rasbora in a shoal of 6+ or it gets stressed and nippy.
  • Convict Cichlid⚠️ With caution
    Aggressive · 10 cm · Easy care · 21–28 °C (70–82 °F)
    • Water hardness preferences differ (Kuhli Loach 1–8 vs Convict Cichlid 9–20 dGH).
    • Your 75 L tank is below the ~110 L this pairing really wants — crowding raises aggression.
  • Daffodil Cichlid⚠️ With caution
    Semi-aggressive · 10 cm · Medium care · 23–27 °C (73–81 °F)
    • pH preferences only just meet (Kuhli Loach 5.5–7 vs Daffodil Cichlid 7.8–9) — target the overlap and acclimate slowly.
    • One likes softer water and the other harder (1–8 vs 10–20 dGH) — a compromise, not a perfect match.
    • Your 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
  • Electric Yellow Cichlid⚠️ With caution
    Semi-aggressive · 10 cm · Medium care · 23–26 °C (73–79 °F)
    • Different pH ranges (5.5–7 vs 7.8–8.9); doable if you sit in the shared band, but not ideal long-term.
    • Water hardness preferences differ (Kuhli Loach 1–8 vs Electric Yellow Cichlid 10–20 dGH).
    • Your 75 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
  • Giant Danio⚠️ With caution
    Peaceful · 10 cm · Easy care · 20–27 °C (68–81 °F)
    • Your 75 L tank is below the ~110 L this pairing really wants — crowding raises aggression.
    • Keep Giant Danio in a shoal of 6+ or it gets stressed and nippy.
  • Johanni Cichlid⚠️ With caution
    Aggressive · 10 cm · Medium care · 24–28 °C (75–82 °F)
    • pH preferences only just meet (Kuhli Loach 5.5–7 vs Johanni Cichlid 7.8–8.6) — target the overlap and acclimate slowly.
    • One likes softer water and the other harder (1–8 vs 10–20 dGH) — a compromise, not a perfect match.
    • Your 75 L tank is below the ~200 L this pairing really wants — crowding raises aggression.
    • Keep Johanni Cichlid in a shoal of 6+ or it gets stressed and nippy.
  • Keyhole Cichlid⚠️ With caution
    Peaceful · 10 cm · Easy care · 22–28 °C (72–82 °F)
    • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Molly⚠️ With caution
    Peaceful · 10 cm · Easy care · 23–28 °C (73–82 °F)
    • Water hardness preferences differ (Kuhli Loach 1–8 vs Molly 10–25 dGH).
  • Paradise Fish⚠️ With caution
    Aggressive · 10 cm · Medium care · 16–26 °C (61–79 °F)
    • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Porthole Catfish⚠️ With caution
    Peaceful · 10 cm · Easy care · 22–28 °C (72–82 °F)
    • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Rusty Cichlid⚠️ With caution
    Semi-aggressive · 10 cm · Medium care · 24–28 °C (75–82 °F)
    • pH preferences only just meet (Kuhli Loach 5.5–7 vs Rusty Cichlid 7.8–8.5) — target the overlap and acclimate slowly.
    • One likes softer water and the other harder (1–8 vs 10–20 dGH) — a compromise, not a perfect match.
    • Your 75 L tank is below the ~150 L this pairing really wants — crowding raises aggression.
  • Tanganyikan Butterfly Cichlid⚠️ With caution
    Semi-aggressive · 10 cm · Hard care · 24–28 °C (75–82 °F)
    • pH preferences only just meet (Kuhli Loach 5.5–7 vs Tanganyikan Butterfly Cichlid 8–9) — target the overlap and acclimate slowly.
    • One likes softer water and the other harder (1–8 vs 10–20 dGH) — a compromise, not a perfect match.
    • Your 75 L tank is below the ~130 L this pairing really wants — crowding raises aggression.
  • Upside-down Catfish⚠️ With caution
    Peaceful · 10 cm · Easy care · 22–26 °C (72–79 °F)
    • Your 75 L tank is below the ~115 L this pairing really wants — crowding raises aggression.
  • Zebra Pleco⚠️ With caution
    Peaceful · 10 cm · Hard care · 26–30 °C (79–86 °F)
    • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
  • Alligator Gar⛔ Not recommended
    Aggressive · 250 cm · Hard care · 24–28 °C (75–82 °F)
    • Size gap is too large (250 vs 10 cm): Alligator Gar will treat Kuhli Loach as food.
    • Your 75 L tank is below the ~3785 L this pairing really wants — crowding raises aggression.
  • Clown Knifefish⛔ Not recommended
    Aggressive · 90 cm · Hard care · 24–28 °C (75–82 °F)
    • Kuhli Loach is bite-sized to a 90 cm predatory clown knifefish — it will be eaten.
    • Your 75 L tank is below the ~750 L this pairing really wants — crowding raises aggression.
  • Fire Eel⛔ Not recommended
    Semi-aggressive · 100 cm · Medium care · 24–28 °C (75–82 °F)
    • Kuhli Loach is bite-sized to a 100 cm predatory fire eel — it will be eaten.
    • Your 75 L tank is below the ~380 L this pairing really wants — crowding raises aggression.
  • Koi⛔ Not recommended
    Peaceful · 90 cm · Medium care · 4–28 °C (39–82 °F)
    • Size gap is too large (90 vs 10 cm): Koi will treat Kuhli Loach as food.
    • Water hardness preferences differ (Kuhli Loach 1–8 vs Koi 9–18 dGH).
    • Your 75 L tank is below the ~3800 L this pairing really wants — crowding raises aggression.
  • Redtail Catfish⛔ Not recommended
    Aggressive · 120 cm · Hard care · 24–27 °C (75–81 °F)
    • Kuhli Loach is bite-sized to a 120 cm predatory redtail catfish — it will be eaten.
    • Your 75 L tank is below the ~5700 L this pairing really wants — crowding raises aggression.
  • Spotted Gar⛔ Not recommended
    Aggressive · 90 cm · Hard care · 18–26 °C (64–79 °F)
    • Kuhli Loach is bite-sized to a 90 cm predatory spotted gar — it will be eaten.
    • Your 75 L tank is below the ~600 L this pairing really wants — crowding raises aggression.
  • Wels Catfish⛔ Not recommended
    Aggressive · 300 cm · Hard care · 15–25 °C (59–77 °F)
    • Kuhli Loach is bite-sized to a 300 cm predatory wels catfish — it will be eaten.
    • Your 75 L tank is below the ~20000 L this pairing really wants — crowding raises aggression.
  • Wolf Cichlid⛔ Not recommended
    Aggressive · 72 cm · Hard care · 24–30 °C (75–86 °F)
    • Kuhli Loach is bite-sized to a 72 cm predatory wolf cichlid — it will be eaten.
    • Your 75 L tank is below the ~760 L this pairing really wants — crowding raises aggression.

Compatibility is computed from each species' care data — a strong starting point, not a guarantee. Individual temperament varies, so always introduce new fish slowly and watch them.

Setting up a kuhli loach community tank

Give the group a stable, planted 75 L+ tank with a gentle filter, a reliable heater and plenty of cover — broken sight lines and hiding spots let mid-water and bottom dwellers keep out of each other's way. Cycle it fully and stock gradually.

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How to choose

How to choose the right tank mates for a kuhli loach

As a peaceful species, kuhli loach is easily bullied — favour other calm, non-nippy fish and steer clear of boisterous or aggressive tank mates. It mostly occupies the bottom of the tank, so it pairs naturally with species that use the other levels.

Kuhli Loach grows to about 10 cm, so avoid tank mates small enough to be seen as food — as a rule of thumb, skip anything under roughly 5 cm. Match its water, too: aim for 24–30 °C (75–86 °F), pH 5.5–7 and 1–8 dGH. Fish needing very different conditions — coldwater species, or hard-water lovers against a soft-water fish — rarely thrive side by side.

Kuhli Loach is a shoaling fish — stock a group of 5+ of its own kind first, then build compatible tank mates around them. Whatever you add, introduce new fish slowly, watch for bullying in the first days, and have a backup plan if temperaments clash.

FAQ

Frequently asked questions

Can a kuhli loach live with other fish?

Yes — with the right companions. Our checker finds 162 compatible freshwater species for kuhli loach. Pick calm, similarly-sized fish that share its water needs and add them to a mature, well-planted tank.

What is the best tank mate for a kuhli loach?

Easy, peaceful, similarly-sized species top the list — for example Ember Tetra, Neon Green Rasbora, Ramshorn Snail. Use the checker above to match against your own tank size.

What fish should you avoid keeping with a kuhli loach?

Avoid Wels Catfish, Alligator Gar, Redtail Catfish and similar — usually a temperature, size or temperament clash. The full "avoid" list below gives the reason for each.

How big a tank do kuhli loach tank mates need?

Start from Kuhli Loach's own minimum and scale up with every addition. The checker above defaults to a 75 L community tank and flags pairings that need more room — drag the slider to match your setup.

← Back to the full Kuhli Loach care guide